Answer:
Diana has 33 and Roberto has 15.
Step-by-step explanation:
Use D for the amount of apples Diana has and R for Roberto
D=R+18
D+R=48
Use Substitution to solve the system of Equations
R+18+R=48 ----> 2R+18=48- Subtract 18
2R=30- DIvide by 2
R=15
Substitute R into another equation
D=R+18
D=15+18
D=33
Answer:
Step-by-step explanation:
plot | 2 x = 2 cos(2 x) | x = 0 ° to 180 °
If circumference = (2 * PI * radius) then we solve for radius
radius = circumference / (2 * PI)radius = 25.142758 / 22/7 * 2radius = <span><span>4.00
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circle area = PI * radius^2circle area = 22/7 * 4^2circle area = 22/7 *16
<span><span><span>circle area = 50.29 square inches
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Answer:
y = cos(x)
Step-by-step explanation:
This graph of the cosine function has no shifting or scaling. It is a plain cosine function:
y = cos(x)
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<em>Additional comment</em>
It will be worth your time to learn to recognize the sine and cosine functions. They have a maximum of +1, a minimum of -1 and a period (horizontal distance between corresponding points) of 2π. The sine function is symmetrical about the origin. The cosine function is symmetrical about the y-axis. The maximum slope (near the zero-crossings) is 1.